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LuckyWell [14K]
3 years ago
7

In order to explain how the first eukaryotic cells may have evolved, scientists proposed the

Biology
2 answers:
ipn [44]3 years ago
5 0
I think that D is the answer
ollegr [7]3 years ago
3 0

The correct answer is option C, that is, the theory of endosymbiosis.  

The endosymbiotic theory deals with the origins of chloroplasts and mitochondria, the two eukaryotic organelles possessing bacterial features. Mitochondria and chloroplasts are considered to have generated from symbiotic bacteria, mainly the alpha-proteobacteria and cyanobacteria.  

According to the endosymbiotic theory the eukaryotes developed via a process whereby distinct kinds of free-living prokaryotes became integrated within the bigger prokaryotic cells and finally resulting into chloroplasts, mitochondria, and possibly other organelles.  


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In the last century, the extent of global rain forests has been reduced by _____. one-half
Elodia [21]

The correct answer is - one-half.

In the past century, the deforestation of the rainforests in the world had been devastating, and it is estimated that approximately one half of the tropical rainforests have been destroyed.

The reason for the large scale destruction of the rainforests is mainly because of clearing space for agriculture and for spaces where the cattle can graze. Unfortunately, the people that live the regions where the tropical forests are, are not well educated as to how to manage the land, and a big problem is that the soil of the rainforests is only good for 2-3 seasons, because it spends and erodes very quickly. Because of that, people just continue to clear more and more of it, thus leaving destroyed forest and destroyed soil behind them, without taking in consideration the long term effects.

4 0
3 years ago
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In cats, there are two types of ears: normal and curly. A curly-eared cat mated with a normal- eared cat, and all of the kittens
sp2606 [1]

Answer:

In cats, there are two types of ears: normal and curly. A curly-eared cat mated with a normal- eared cat, and all of the kittens had curly ears. Are curly ears a dominant or recessive trait? Explain.

CC x cc = Cc, Cc, Cc, and Cc 4:0

All kittens have curly ears, this is as a result of the dominance of curly ears to normal ears that is recessive

Explanation:

6 0
3 years ago
Which type of direct increases glycogen stored in muscle and endurance time at marathon speed most? high fat mixed high carbohyd
tino4ka555 [31]

The  type of direct that increases glycogen stored in muscle and endurance time at marathon speed most is high carbohydrate. Option C.

<h3>What is glycogen?</h3>

The term glycogen refers to the form in which carbohydrate is stored in the body. The energy that is stored as glycogen in the body can be slowly released when required by hydrolysis of the glycogen molecule.

The  type of direct that increases glycogen stored in muscle and endurance time at marathon speed most is high carbohydrate. Option C.

Learn more about glycogen:brainly.com/question/14466525

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Missing parts;

Which type of direct increases glycogen stored in muscle and endurance time at marathon speed most? A. high fat B. mixed C. high carbohydrate D. fasting

4 0
2 years ago
What is a drug found in tobacco that speeds up heartbeat? * 5 points?
Darya [45]
The drugs that are found are <span>Tar, </span><span>Carbon monoxide,</span><span> Nicotine and</span><span>Emphysema </span>
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3 years ago
Which statement best describes how some trees respond to decreasing
Alekssandra [29.7K]

Answer:

its a

Explanation:

6 0
3 years ago
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